Mattress cover



FIG. 1 is a perspective view of a mattress cover, showing our newdesing;

FIG. 2 is a top plan view;

FIG. 3 is a front elevation view, the rear elevation view being a mirrorimage thereof; and,

FIG. 4 is a right side elevation view, the left side elevation viewbeing a mirror image thereof.

The ornamental design for a mattress cover, as shown and described.